Comment 1 for bug 1488282

a similar signature has appeared in the check pipeline:
ft1.774: tempest.api.compute.test_tenant_networks.NetworksTestJSON.test_list_show_tenant_networks[id-edfea98e-bbe3-4c7a-9739-87b986baff26]_StringException: Empty attachments:
  stderr
  stdout

pythonlogging:'': {{{
2015-08-25 13:33:13,174 13818 INFO [tempest_lib.common.rest_client] Request (NetworksTestJSON:test_list_show_tenant_networks): 200 POST http://127.0.0.1:5000/v2.0/tokens
2015-08-25 13:33:13,175 13818 DEBUG [tempest_lib.common.rest_client] Request - Headers: {}
        Body: None
    Response - Headers: {'x-openstack-request-id': 'req-2a00725c-ebe2-4b74-95e3-152d03ad7f04', 'content-type': 'application/json', 'connection': 'close', 'date': 'Tue, 25 Aug 2015 13:33:13 GMT', 'vary': 'X-Auth-Token', 'content-length': '4108', 'server': 'Apache/2.4.7 (Ubuntu)', 'status': '200'}
        Body: None
2015-08-25 13:33:14,140 13818 INFO [tempest_lib.common.rest_client] Request (NetworksTestJSON:test_list_show_tenant_networks): 200 GET http://127.0.0.1:8774/v2/8bfb517768e84e389e23ac66d3fcee01/os-tenant-networks 0.964s
2015-08-25 13:33:14,140 13818 DEBUG [tempest_lib.common.rest_client] Request - Headers: {'Accept': 'application/json', 'X-Auth-Token': '<omitted>', 'Content-Type': 'application/json'}
        Body: None
    Response - Headers: {'x-compute-request-id': 'req-f62eaab2-c79e-4e70-87ed-ad4e4bb387e6', 'content-type': 'application/json', 'connection': 'close', 'date': 'Tue, 25 Aug 2015 13:33:14 GMT', 'status': '200', 'content-length': '174', 'content-location': 'http://127.0.0.1:8774/v2/8bfb517768e84e389e23ac66d3fcee01/os-tenant-networks'}
        Body: {"networks": [{"cidr": "None", "id": "299caaf9-c07a-443f-bd1a-5f4965152e8d", "label": "public"}, {"cidr": "None", "id": "8d374c24-891b-40ad-9450-98fe640622a9", "label": ""}]}
2015-08-25 13:33:15,168 13818 INFO [tempest_lib.common.rest_client] Request (NetworksTestJSON:test_list_show_tenant_networks): 200 GET http://127.0.0.1:8774/v2/8bfb517768e84e389e23ac66d3fcee01/os-tenant-networks/299caaf9-c07a-443f-bd1a-5f4965152e8d 1.026s
2015-08-25 13:33:15,168 13818 DEBUG [tempest_lib.common.rest_client] Request - Headers: {'Accept': 'application/json', 'X-Auth-Token': '<omitted>', 'Content-Type': 'application/json'}
        Body: None
    Response - Headers: {'x-compute-request-id': 'req-170c3890-beb2-4dfe-a4d6-6d30a0f2b732', 'content-type': 'application/json', 'connection': 'close', 'date': 'Tue, 25 Aug 2015 13:33:15 GMT', 'status': '200', 'content-length': '94', 'content-location': 'http://127.0.0.1:8774/v2/8bfb517768e84e389e23ac66d3fcee01/os-tenant-networks/299caaf9-c07a-443f-bd1a-5f4965152e8d'}
        Body: {"network": {"cidr": "None", "id": "299caaf9-c07a-443f-bd1a-5f4965152e8d", "label": "public"}}
2015-08-25 13:33:16,100 13818 INFO [tempest_lib.common.rest_client] Request (NetworksTestJSON:test_list_show_tenant_networks): 404 GET http://127.0.0.1:8774/v2/8bfb517768e84e389e23ac66d3fcee01/os-tenant-networks/8d374c24-891b-40ad-9450-98fe640622a9 0.930s
2015-08-25 13:33:16,100 13818 DEBUG [tempest_lib.common.rest_client] Request - Headers: {'Accept': 'application/json', 'X-Auth-Token': '<omitted>', 'Content-Type': 'application/json'}
        Body: None
    Response - Headers: {'x-compute-request-id': 'req-0db2c75e-6ffc-4b09-b9fe-fb1e02d969a9', 'content-type': 'application/json; charset=UTF-8', 'connection': 'close', 'date': 'Tue, 25 Aug 2015 13:33:16 GMT', 'status': '404', 'content-length': '63'}
        Body: {"itemNotFound": {"message": "Network not found", "code": 404}}
}}}

Traceback (most recent call last):

  File "tempest/api/compute/test_tenant_networks.py", line 32, in test_list_show_tenant_networks
    tenant_network = self.client.show_tenant_network(net['id'])
  File "tempest/services/compute/json/tenant_networks_client.py", line 30, in show_tenant_network
    resp, body = self.get("os-tenant-networks/%s" % network_id)
  File "/opt/stack/new/tempest/.tox/full/local/lib/python2.7/site-packages/tempest_lib/common/rest_client.py", line 271, in get
    return self.request('GET', url, extra_headers, headers)
  File "/opt/stack/new/tempest/.tox/full/local/lib/python2.7/site-packages/tempest_lib/common/rest_client.py", line 643, in request
    resp, resp_body)
  File "/opt/stack/new/tempest/.tox/full/local/lib/python2.7/site-packages/tempest_lib/common/rest_client.py", line 695, in _error_checker
    raise exceptions.NotFound(resp_body)
tempest_lib.exceptions.NotFound: Object not found
Details: {u'message': u'Network not found', u'code': 404}